Results 31 to 40 of about 555,673 (291)

Noise Reduction in Tractor Cabs Using Coupled Resonance Acoustic Materials

IEEE Access, 2022
The noise level in a tractor cab directly affects the driving experience. Reducing the noise level in a tractor cab is an important means of improving the image of the product brand and protecting the physical and psychological health of employees.
Zhipeng Wang, Yanyan Zuo, Liming Sun, Xiaohe Zhao   +3 more
doaj   +1 more source

Multiscale sub-octave wavelet transform for de-noising and enhancement [PDF]

, 1996
This paper describes an approach for accomplishing sub- octave wavelet analysis and its discrete implementation for noise reduction and feature enhancement.
Laine, Andrew F., Zong, Xuli
core   +2 more sources

Fast non-local means noise reduction algorithm with acceleration function for improvement of image quality in gamma camera system: A phantom study

Nuclear Engineering and Technology, 2019
Gamma-ray images generally suffer from a lot of noise because of low photon detection in the gamma camera system. The purpose of this study is to improve the image quality in gamma-ray images using a gamma camera system with a fast nonlocal means (FNLM ...
Chan Rok Park, Youngjin Lee
doaj   +1 more source

Strong negative self regulation of Prokaryotic transcription factors increases the intrinsic noise of protein expression [PDF]

, 2008
Background Many prokaryotic transcription factors repress their own transcription. It is often asserted that such regulation enables a cell to homeostatically maintain protein abundance.
A Bar-Even, A Becskei, A de la Hoz, A Kierzek, C Cox, D Austin, Dafyd J Jenkins, Dov J Stekel, E Ozdubak, F Neidhardt, G Shinar, H El-Samad, I Keseler, J Paulsson, J Plumbridge, K Kostelidou, L Bingle, L Cai, M Elowitz, M Gibson, M Keeling, M Koern, M Samoilov, M Simpson, M Simpson, M Thattai, M Wall, N Rosenfeld, P Chivers, P Swain, Q Wang, R Rolfes, S Hooshangi, S Reichheld, T Kepler, Y Dublanche   +35 more
core   +4 more sources

Research on Noise Reduction Method of Pressure Pulsation Signal of Draft Tube of Hydropower Unit Based on ALIF-SVD

Shock and Vibration, 2021
Aiming at the problem that it is difficult to extract the characteristics of the draft tube pressure fluctuation signal under the background of strong noise, this study proposes a dual noise reduction method based on adaptive local iterative filtering ...
Yan Ren, Pan Liu, Leiming Hu, Jin Huang, Ruoyu Qiao, Hongping Chen, Xiaokai Li, Shaojie Huang   +7 more
doaj   +1 more source

Simulation and Experimental Studies of Optimization of σ-Value for Block Matching and 3D Filtering Algorithm in Magnetic Resonance Images

Applied Sciences, 2023
In this study, we optimized the σ-values of a block matching and 3D filtering (BM3D) algorithm to reduce noise in magnetic resonance images. Brain T2-weighted images (T2WIs) were obtained using the BrainWeb simulation program and Rician noise with ...
Minji Park, Seong-Hyeon Kang, Kyuseok Kim, Youngjin Lee, for the Alzheimer’s Disease Neuroimaging Initiative   +4 more
doaj   +1 more source

Noise Reduction for a Virtual Grid Using a Generative Adversarial Network in Breast X-ray Images

Journal of Imaging, 2023
In this study, we aimed to address the issue of noise amplification after scatter correction when using a virtual grid in breast X-ray images. To achieve this, we suggested an algorithm for estimating noise level and developed a noise reduction algorithm
Sewon Lim, Hayun Nam, Hyemin Shin, Sein Jeong, Kyuseok Kim, Youngjin Lee   +5 more
doaj   +1 more source

Noise Reduction Analysis of Radar Rainfall Using Chaotic Dynamics and Filtering Techniques

Advances in Meteorology, 2014
The aim of this study is to evaluate the filtering techniques which can remove the noise involved in the time series. For this, Logistic series which is chaotic series and radar rainfall series are used for the evaluation of low-pass filter (LF) and ...
Soojun Kim, Huiseong Noh, Narae Kang, Keonhaeng Lee, Yonsoo Kim, Sanghun Lim, Dong Ryul Lee, Hung Soo Kim   +7 more
doaj   +1 more source

Method of quantitative estimation of acoustic characteristics of the fan stage [PDF]

, 2017
Современное двигателестроение тесно связано с учетом экологических параметров двигателей, которые позволяет их разработчикам быть конкурентоспособными и востребованными на мировом рынке [1].
Кисляк, Михаил Иванович
core   +1 more source

Noise Level and Similarity Analysis for Computed Tomographic Thoracic Image with Fast Non-Local Means Denoising Algorithm

Applied Sciences, 2020
Although conventional denoising filters have been developed for noise reduction from digital images, these filters simultaneously cause blurring in the images. To address this problem, we proposed the fast non-local means (FNLM) denoising algorithm which
Bae-Guen Kim, Seong-Hyeon Kang, Chan Rok Park, Hyun-Woo Jeong, Youngjin Lee   +4 more
doaj   +1 more source